CN218829466U - Hub gear motor - Google Patents
Hub gear motor Download PDFInfo
- Publication number
- CN218829466U CN218829466U CN202223212793.2U CN202223212793U CN218829466U CN 218829466 U CN218829466 U CN 218829466U CN 202223212793 U CN202223212793 U CN 202223212793U CN 218829466 U CN218829466 U CN 218829466U
- Authority
- CN
- China
- Prior art keywords
- hub
- shaft
- gear
- motor
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model relates to a hub gear motor, which comprises a hub, a left hub shaft, a right hub shaft, a casing, a motor component, a reduction gear mechanism and a shaft coupling, wherein the casing is positioned in an inner cavity of the hub, the casing is provided with a motor cavity and a gear cavity which are separated from the left and the right, and the right end of the left hub shaft is non-rotatably assembled and matched with the left end of the casing; the output gear of the reduction gear mechanism is sleeved on the right hub shaft; the left end and the right end of the gear cavity are provided with a motor shaft hole and an output shaft hole, an oil seal is arranged between a motor shaft and the motor shaft hole, an oil seal is arranged between the extending end of the output gear and the output shaft hole, and an oil seal is arranged between the inner hole of the output gear and the right hub shaft; the shaft coupling is located between casing and wheel hub, and the shaft coupling suit is on the right wheel hub axle. The beneficial effects are that: the mechanism is simple, the installation is convenient, and the appearance is simple; structural design conveniently designs the oil blanket sealed, makes the reduction gear mechanism in the gear chamber can be lubricated through machine oil, can not take place to leak, and is lubricated effectual, long service life.
Description
Technical Field
The utility model relates to a wheel hub gear motor.
Background
The hub motor is integrated in the hub, and the hub is directly driven to rotate by the motor in the hub. Meanwhile, in order to enable the low-power motor to output larger torque, a gear reduction mechanism can be added, and the torque of the low-power motor is amplified through the gear reduction mechanism.
For example, chinese patent CN102410317A discloses a centrifugal clutch and a gear shifting driving hub of an electric vehicle having the same, wherein the gear shifting is performed by a motor and a gear shifting gear mechanism in the hub.
The technical problems existing in the prior art are as follows: the structural design is not reasonable, and the production and assembly are not facilitated; the structural design is unreasonable, and the arrangement of a sealing structure is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that: the hub gear motor is simple in structure and convenient to assemble.
The utility model provides a technical scheme that its technical problem adopted is: a hub gear motor comprises a hub, a left hub shaft, a right hub shaft, a shell, a motor assembly, a reduction gear mechanism and a coupler, wherein the left hub shaft and the right hub shaft are respectively and rotatably arranged in shaft holes on the left side and the right side of the hub; the right end of the left hub shaft is in non-rotatable assembly fit with the left end of the machine shell; the speed reducing gear mechanism comprises an input gear and an output gear, the input gear is positioned on a motor shaft of the motor assembly extending into the gear cavity and used for inputting the power of the motor assembly into the speed reducing gear mechanism, and the output gear is sleeved on a right hub shaft extending into the gear cavity and used for outputting the power reduced by the speed reducing gear mechanism; the left end and the right end of the gear cavity are provided with a motor shaft hole and an output shaft hole, a motor shaft extends into the gear cavity through the motor shaft hole, an oil seal is arranged between the motor shaft and the motor shaft hole for sealing, the extending end of the output gear extends out through the output shaft hole, an oil seal is arranged between the extending end of the output gear and the output shaft hole for sealing, and an oil seal is arranged between an inner hole of the output gear and a right wheel hub shaft for sealing; the shaft coupling is located between casing and wheel hub, and on the shaft coupling suit right wheel hub axle, the left end of shaft coupling and the end that stretches out the casing of output gear transmission cooperation, the other end and the wheel hub transmission cooperation of shaft coupling.
The utility model elaborately designs the whole gear box and the motor together and transmits power to the wheel hub through the shaft coupling, thereby playing the effects of simple mechanism, convenient installation and simple appearance;
the utility model discloses a structural design conveniently designs the oil blanket sealed, makes the reduction gear mechanism of gear intracavity can be lubricated through machine oil to can guarantee that the machine oil of gear intracavity can not take place to leak, lubricated effectual, long service life. However, CN102410317A in the background art cannot design oil seal for structural design reasons, so that the shift gear mechanism in the transmission case can only be lubricated by lubricating grease, and the lubricating effect is poor;
the power of the motor is subjected to gear reduction through the reduction gear mechanism, a low-power direct-current motor can output large torque, the running is more electricity-saving, and long mileage is realized.
Further limiting, a bearing is arranged between the inner hole of the output gear and the right hub shaft for rotating support, a step structure is arranged in the inner hole of the output gear and used for limiting the bearing and an oil seal in the inner hole of the output gear, and the oil seal in the inner hole of the output gear is positioned on the right side of the bearing; a bearing is arranged between the extending end of the output gear and the output shaft hole for rotating support, a step structure is arranged on the extending end of the output gear and used for limiting the bearing and an oil seal on the extending end of the output gear, and the oil seal is positioned on the left side of the bearing on the extending end of the output gear; set up the bearing between motor shaft and the motor shaft hole and rotate the support, the downthehole stair structure that has of motor shaft for carry on spacingly to bearing and oil blanket in the motor shaft hole, the oil blanket is located the right side of bearing in the motor shaft hole.
Further, the reduction gear mechanism performs reduction transmission through a transition gear meshed with the input gear and the output gear respectively, the transition gear comprises a first transition gear and a second transition gear which are coaxially arranged, the first transition gear is in meshing transmission with the input gear, and the second transition gear is in meshing transmission with the output gear.
Further inject, motor shaft and right wheel hub axle are coaxial to the right-hand member of motor shaft and the left end of right wheel hub axle are through the cooperation of the rotatable nestification of unsmooth nested structure, and unsmooth nested structure includes protruding axle and shrinkage pool, protruding axle embedding shrinkage pool.
The length of the right hub shaft is long, a lever effect exists during loading, meanwhile, the output gear and other gears can generate repulsive force during meshing transmission, the repulsive force acts on the left end of the right hub shaft, the operation balance of the right hub shaft is influenced, the influence can be offset through the concave-convex nested structure, and the rotation stability of the hub motor is guaranteed.
Further, bearings are arranged between the right hub shaft and the shaft hole of the hub and between the right hub shaft and the coupler for rotatably supporting, and the bearing part of the rotatably supporting coupler is embedded in the shaft hole of the hub.
The additional technical characteristics can ensure that the rotating reference surfaces of the hub and the shaft coupling are uniform, and the rotating stability of the hub motor is ensured.
Further limited, the shell is of a split structure and comprises a left cover, a left shell, a middle shell and a right shell which are arranged from left to right, the left cover and the left shell are fixed on the left side of the middle shell through bolts penetrating through the left cover and the left shell, the right shell is fixed on the right side of the middle shell through bolts penetrating through the right shell, the left shell and the middle shell form a motor cavity, the right shell and the middle shell form a gear box, a central hole is formed in the left cover, a wire outlet hole is formed in the left hub shaft, and the right end of the left hub shaft is embedded into the central hole of the left cover and is fixedly connected with the left cover and the right shell.
Further defined, the hub includes a hub outer ring, a left hub cover and a right hub cover, the left hub cover and the right hub cover being secured to the hub outer ring by bolts.
Further inject, transmission cooperation structure between shaft coupling and the output gear and transmission cooperation structure between shaft coupling and the wheel hub are unsmooth transmission cooperation structure, and unsmooth transmission cooperation structure between shaft coupling and the output gear is the criss-cross lug and the recess that set up at the terminal surface respectively, and unsmooth transmission cooperation structure between shaft coupling and the wheel hub is protruding axle and the shrinkage pool of arranging for setting up the annular at the terminal surface respectively.
This additional technical feature makes it possible to simplify the assembly difficulties and to ensure reliable transmission.
The utility model has the advantages that: the whole gear box and the motor are elaborately designed together and transmit power to the hub through the coupler, so that the effects of simple mechanism, convenience in installation and simple appearance are achieved; the utility model discloses a structural design conveniently designs the oil blanket sealed, makes the reduction gear mechanism of gear intracavity can be lubricated through machine oil to can guarantee that the machine oil of gear intracavity can not take place to leak, lubricated effectual, long service life.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view with the right hub cover and the right shell removed;
fig. 5 is a schematic structural diagram of a front view angle of the coupling of the present invention;
fig. 6 is a schematic structural diagram of a back view angle of the coupling of the present invention;
FIG. 7 is a schematic structural view of the right hub cover of the present invention;
fig. 8 is a schematic structural view of an output gear of the present invention;
in the figure, 1, a hub, 1-1, a hub outer ring, 1-2, a left hub cover, 1-3, a right hub cover, 2, a left hub shaft, 3, a right hub shaft, 4, a machine shell, 4-1, a left cover, 4-2, a left shell, 4-3, a middle shell, 4-4, a right shell, 5, a motor assembly, 6, a coupler, 7, a bolt, 8, an outlet hole, 9, an input gear, 10, an output gear, 11, a motor shaft, 12, a lug, 13, a groove, 14, a convex shaft, 15, a concave hole, 16, a transition gear, 16-1, a first transition gear, 16-2, a second transition gear, 17, an oil seal and 18 are bearings.
Detailed Description
As shown in fig. 1 to 8, a hub gear motor includes a hub 1, a left hub shaft 2, a right hub shaft 3, a casing 4, a motor assembly 5, a reduction gear mechanism and a coupling 6, wherein the left hub shaft 2 and the right hub shaft 3 are respectively rotatably installed in shaft holes at left and right sides of the hub 1, the casing 4 is located in an inner cavity of the hub 1, the casing 4 has a motor cavity and a gear box partitioned from left and right, the motor assembly 5 is installed in the motor cavity, and the reduction gear mechanism is installed in the gear cavity.
The motor assembly includes a stator and a rotor.
To ensure that the housing 4 and its internal mechanisms do not rotate with the hub 1, the right end of the left hub axle 2 is non-rotatably fitted into engagement with the left end of the housing 4.
As shown in fig. 3, the casing 4 is a split structure, and includes a left cover 4-1, a left casing 4-2, a middle casing 4-3, and a right casing 4-4, which are arranged from left to right, the left cover 4-1 and the left casing 4-2 are fixed on the left side of the middle casing 4-3 by bolts 7 penetrating through the left cover 4-1 and the left casing 4-2, the right casing 4-4 is fixed on the right side of the middle casing 4-3 by bolts 7 penetrating through the right casing 4-4, the left casing 4-2 and the middle casing 4-3 form a motor cavity, the right casing 4-4 and the middle casing 4-3 form a gear box, the left cover 4-1 has a central hole, a wire outlet hole 8 is provided in the left hub shaft 2 for wire outlet of a cable of the motor assembly 5, the right end of the left hub shaft 2 is embedded in the central hole of the left cover 4-1 and fixedly connected with each other, specifically, which may be welded, so as to realize non-rotatable assembly and matching between the right end of the left hub shaft 2 and the left end of the casing 4.
As shown in fig. 3 and 4, the reduction gear mechanism includes an input gear 9 and an output gear 10, the input gear 9 is located on a motor shaft 11 of the motor assembly 5 extending into the gear cavity for inputting the power of the motor assembly 5 into the reduction gear mechanism, and the output gear 10 is sleeved on the right hub shaft 3 extending into the gear cavity for outputting the power reduced by the reduction gear mechanism.
As shown in fig. 3, 4, 5, 6 and 7, the coupling 6 is located between the casing 4 and the hub 1, the coupling 6 is sleeved on the right hub shaft 3, the left end of the coupling 6 is in transmission fit with the extending end of the output gear 10 extending out of the casing 4, and the other end of the coupling 6 is in transmission fit with the hub 1.
As shown in fig. 5, 6, 7 and 8, the transmission matching structure between the coupler 6 and the output gear 10 and the transmission matching structure between the coupler 6 and the right hub cover 1-3 of the hub 1 are concave-convex transmission matching structures, the concave-convex transmission matching structures between the coupler 6 and the output gear 10 are respectively a cross-shaped bump 12 and a cross-shaped groove 13 which are arranged on the end surface, and the concave-convex transmission matching structures between the coupler 6 and the right hub cover 1-3 of the hub 1 are respectively a convex shaft 14 and a concave hole 15 which are arranged on the end surface and are annularly arranged.
As shown in fig. 3 and 4, the reduction gear mechanism performs reduction transmission through a transition gear 16 engaged with the input gear 9 and the output gear 10, respectively, the transition gear 16 includes a first transition gear 16-1 and a second transition gear 16-2 coaxially disposed, the first transition gear 16-1 is in engagement transmission with the input gear 9, and the second transition gear 16-2 is in engagement transmission with the output gear 10.
As shown in fig. 3, both ends have motor shaft hole and output shaft hole about the gear chamber, and motor shaft 11 stretches into the gear chamber through motor shaft hole, sets up oil blanket 17 between motor shaft 11 and the motor shaft hole and seals, sets up bearing 18 between motor shaft 11 and the motor shaft hole and rotates the support, has stair structure in the motor shaft hole for bearing 18 and oil blanket 17 in the motor shaft hole carry on spacingly, and oil blanket 17 is located the right side of bearing 18 in the motor shaft hole.
As shown in fig. 3 and 4, the protruding end of the output gear 10 protrudes through the output shaft hole, an oil seal 17 is disposed between the protruding end of the output gear 10 and the output shaft hole for sealing, a bearing 18 is disposed between the protruding end of the output gear 10 and the output shaft hole for rotatably supporting, a step structure is provided on the protruding end of the output gear 10 for limiting the bearing 18 and the oil seal 17 on the protruding end of the output gear 10, and the oil seal 17 is located on the left side of the bearing 18 on the protruding end of the output gear 10.
As shown in FIG. 3, an oil seal 17 is provided between the inner bore of the output gear 10 and the right hub axle 3 for sealing. A bearing 18 is arranged between the inner hole of the output gear 10 and the right hub shaft 3 for rotary support, the inner hole of the output gear 10 is provided with a step structure for limiting the bearing 18 and an oil seal 17 in the inner hole of the output gear 10, and the oil seal 17 is positioned at the right side of the bearing 18 in the inner hole of the output gear 10.
As shown in FIG. 2, the hub 1 includes a hub outer ring 1-1, a left hub cover 1-2 and a right hub cover 1-3, and the left hub cover 1-2 and the right hub cover 1-3 are fixed to the hub outer ring 1-1 by bolts 7.
As shown in fig. 3, the motor shaft 11 and the right hub shaft 3 are coaxial, and the right end of the motor shaft 11 and the left end of the right hub shaft 3 are rotatably nested and fitted by a concavo-convex nesting structure including a convex shaft 14 and a concave hole 15, the convex shaft 14 being fitted into the concave hole 15.
A bearing 18 is also arranged between the left hub shaft 2 and the shaft hole of the hub 1 for rotating support, oil seals 17 are also arranged between the left hub shaft 2 and the shaft hole of the hub 1 and between the right hub shaft 3 and the shaft hole of the hub 1 for sealing, and the oil seals 17 are only used for water and dust prevention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "left" and "right" are based on the directions or positional relationships shown in fig. 3, which are only for convenience of description of the present invention and simplified description, and should not be construed as limitations of the present invention, and for those skilled in the art, the specific meanings of the above terms can be understood according to specific situations.
Claims (8)
1. The utility model provides a wheel hub gear motor which characterized by: the hub-type bicycle comprises a hub, a left hub shaft, a right hub shaft, a casing, a motor assembly, a reduction gear mechanism and a coupler, wherein the left hub shaft and the right hub shaft are respectively and rotatably installed in shaft holes on the left side and the right side of the hub;
the right end of the left hub shaft is in non-rotatable assembly fit with the left end of the machine shell;
the speed reducing gear mechanism comprises an input gear and an output gear, the input gear is positioned on a motor shaft of the motor assembly extending into the gear cavity and used for inputting the power of the motor assembly into the speed reducing gear mechanism, and the output gear is sleeved on a right hub shaft extending into the gear cavity and used for outputting the power reduced by the speed reducing gear mechanism;
the left end and the right end of the gear cavity are provided with a motor shaft hole and an output shaft hole, a motor shaft extends into the gear cavity through the motor shaft hole, an oil seal is arranged between the motor shaft and the motor shaft hole for sealing, the extending end of the output gear extends out through the output shaft hole, an oil seal is arranged between the extending end of the output gear and the output shaft hole for sealing, and an oil seal is arranged between an inner hole of the output gear and a right wheel hub shaft for sealing;
the shaft coupling is located between casing and wheel hub, and on the shaft coupling suit right wheel hub axle, the left end of shaft coupling and the end that stretches out the casing of output gear transmission cooperation, the other end and the wheel hub transmission cooperation of shaft coupling.
2. The in-wheel gear motor of claim 1, wherein: a bearing is arranged between the inner hole of the output gear and the right hub shaft for rotating support, a step structure is arranged in the inner hole of the output gear and used for limiting the bearing and an oil seal in the inner hole of the output gear, and the oil seal in the inner hole of the output gear is positioned on the right side of the bearing;
a bearing is arranged between the extending end of the output gear and the output shaft hole for rotating support, a step structure is arranged on the extending end of the output gear and used for limiting the bearing and an oil seal on the extending end of the output gear, and the oil seal is positioned on the left side of the bearing on the extending end of the output gear;
set up the bearing between motor shaft and the motor shaft hole and rotate the support, the downthehole stair structure that has of motor shaft for bearing and oil blanket in to the motor shaft hole carry on spacingly, and the oil blanket is located the right side of bearing in the motor shaft hole.
3. The in-wheel gear motor of claim 1, wherein: the speed reduction gear mechanism performs speed reduction transmission through a transition gear which is respectively meshed with the input gear and the output gear, the transition gear comprises a first transition gear and a second transition gear which are coaxially arranged, the first transition gear is meshed with the input gear for transmission, and the second transition gear is meshed with the output gear for transmission.
4. The in-wheel gear motor of claim 1, wherein: the motor shaft is coaxial with the right wheel hub shaft, the right end of the motor shaft and the left end of the right wheel hub shaft are in rotatable nested fit through a concave-convex nested structure, the concave-convex nested structure comprises a convex shaft and a concave hole, and the convex shaft is embedded into the concave hole.
5. The in-wheel gear motor of claim 1, wherein: the right hub shaft and the shaft hole of the hub and the right hub shaft and the shaft coupling are both provided with bearings for rotating and supporting, and the bearing part of the rotating and supporting shaft coupling is embedded into the shaft hole of the hub.
6. The in-wheel gear motor of claim 1, wherein: the shell is of a split structure and comprises a left cover, a left shell, a middle shell and a right shell which are arranged from left to right, the left cover and the left shell are fixed on the left side of the middle shell through bolts penetrating through the left cover and the left shell, the right shell is fixed on the right side of the middle shell through bolts penetrating through the right shell, the left shell and the middle shell form a motor cavity, the right shell and the middle shell form a gear cavity, a central hole is formed in the left cover, a wire outlet hole is formed in the left hub shaft, and the right end of the left hub shaft is embedded into the central hole of the left cover and is fixedly connected with the left cover.
7. The in-wheel gear motor of claim 1, wherein: the hub comprises a hub outer ring, a left hub cover and a right hub cover, wherein the left hub cover and the right hub cover are fixed with the hub outer ring through bolts.
8. The in-wheel gear motor of claim 1, wherein: the transmission matching structure between the coupler and the output gear and the transmission matching structure between the coupler and the hub are concave-convex transmission matching structures, the concave-convex transmission matching structures between the coupler and the output gear are respectively a cross-shaped convex block and a cross-shaped groove which are arranged on the end face, and the concave-convex transmission matching structures between the coupler and the hub are respectively a convex shaft and a concave hole which are arranged on the end face in an annular mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212793.2U CN218829466U (en) | 2022-12-01 | 2022-12-01 | Hub gear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212793.2U CN218829466U (en) | 2022-12-01 | 2022-12-01 | Hub gear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218829466U true CN218829466U (en) | 2023-04-07 |
Family
ID=87258031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223212793.2U Active CN218829466U (en) | 2022-12-01 | 2022-12-01 | Hub gear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218829466U (en) |
-
2022
- 2022-12-01 CN CN202223212793.2U patent/CN218829466U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201509123U (en) | Hub motor system and lubricating system thereof | |
| CN203078306U (en) | Rear axle drive reduction gear of electric car | |
| CN113352880A (en) | Electric forklift driving system | |
| CN202578903U (en) | Power takeoff at rear end of engine | |
| CN218829466U (en) | Hub gear motor | |
| CN209813711U (en) | New forms of energy hybrid vehicle buncher | |
| CN114977606A (en) | Multi-motor coupling structure | |
| CN213685179U (en) | Differential housing for vehicle reduction gearbox | |
| CN211731023U (en) | Central drive formula electric drive system assembly | |
| CN210505173U (en) | Forced driving permanent magnet synchronous motor for small household elevator | |
| CN209516825U (en) | Decelerating motor in a kind of electric car wheel | |
| CN201672001U (en) | Intermediate transmission box applicable to high-power tractor | |
| CN101761610B (en) | Intermediate transmission case for high-power tractor | |
| CN202167938U (en) | Half-shaft brushless motor for electric car | |
| CN112762146A (en) | Electric driving wheel with planetary speed reduction transmission | |
| CN213834350U (en) | Capstan clutch mechanism | |
| CN220727009U (en) | Cycloidal fluted disc rotation speed reducing structure of motor for booster bicycle | |
| CN110949119A (en) | Central-drive electric drive system assembly | |
| CN209833892U (en) | Large-torque thin hub motor | |
| CN214707418U (en) | A deceleration system for in-wheel motor | |
| CN220850585U (en) | Planetary gear speed change device and hub motor | |
| CN215475592U (en) | Compact type double-supporting-wheel-core electric driving system | |
| CN215751917U (en) | Rear axle reduction box | |
| CN217627050U (en) | Built-in type drives elevator hauler by force | |
| CN220527807U (en) | Connection structure of engine and generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |